Alert archive / Missouri / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 71, NWS Kansas City, MO

June 20, 1990Gentry County, Nodaway County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Jun 20, 1990, 1:02 AM CDT for Gentry County, Nodaway County, Missouri. It was in force for 58 min.

The area

The counties it named.

The facts

Issued
Jun 20, 1990, 1:02 AM CDT (06:02 UTC)
Expired
Jun 20, 1990, 2:00 AM CDT
In force
58 min
Issued by
NWS Kansas City, MO
Area
Whole counties

Counties Gentry County, MO, Nodaway County, MO

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 6.0 hours before the alert went out and 166 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Topeka, KS at 00:00Z on 1990-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3973 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Topeka, KS at 00:00Z on 1990-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 185 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
3973 J/kg
Mixed-layer CIN
-45 J/kg
Mixed-layer LCL
2077 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
185 m²/s²
0-3 km storm-relative helicity
320 m²/s²
Significant tornado parameter
0.0
Supercell composite
44.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KMCI 200602
SVRMCI
MOC063-075-147-200700-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY MISSOURI
102 AM CDT WED JUN 20 1990
 
THE NATIONAL WEATHER SERVICE IN KANSAS CITY MISSOURI HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  200 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN NORTHWEST MISSOURI
          ...NORTHERN DEKALB...GENTRY...SOUTHERN NODAWAY
 
AT 100 AM CDT...RADAR INDICATED SEVERE THUNDERSTORMS 10 MILES
SOUTHWEST OF MARYVILLE MISSOURI AND 10 MILES WEST OF KING CITY
MISSOURI...LOCATED ABOUT 15 MILES NORTH OF ST. JOSEPH MISSOURI. THESE
SEVERE THUNDERSTORMS ARE MOVING TO THE EAST AT 40 MPH...AND ARE
EXPECTED TO MOVE ACROSS THE KING CITY AND CONCEPTION JUNCTION MISSOURI
AREAS BEFORE 130AM.
 
HEAVY RAINFALL EXPECTED WITH THESE SEVERE THUNDERSTORMS COULD ALSO
CAUSE STREET FLOODING AND RISES ON SMALL CREEKS AND STREAMS.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
POOLE

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jun 19, 8:05 PM CDT, 4 hours 57 minutes before
MOZ001-004-200200-

SPECIAL WEATHER STSTEMENT
NATIONAL WEATHER SERVICE KANSAS CITY INTERNATIONAL AIRPORT MO
800 PM CDT TUE JUN 19 1990

A FLASH FLOOD WATCH CONTINUES FOR NORTHWEST MISSOURI...

THUNDERSTOFRMS ARE EXPECTED LATER TONITE ACROSS NORTHWEST MISSOURI...
JUST A LITTLE LATER THAN EARLIER THOUGHT.
THE SOIL IS NEARLY SATURATED FROM RECENT HEAVY RAINS...AND ADDITIONAL
HEAVY RAIN COULD PRODUCE FLASH FLOODING.

The office that day

Everything else NWS Kansas City, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 20, 1:02 AM CDTSevere Thunderstorm WarningEAXDeKalb58 min
Jun 20, 2:04 AM CDTFlash Flood WarningEAXHolt, Nodaway3 hr
Jun 20, 2:04 AM CDTFlash Flood WarningEAXGentry, Harrison3 hr

Nearby

Severe Thunderstorm Warnings in Missouri, 1990Every severe thunderstorm warning in 1990

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.